Basic - substituted x a alkyl triphenyl-



United States Patent ()ffice 3,123,643 Patented Mar. 3, 1964 This invention relates to new chemical compounds which possess useful physiological properties, to intermediates useful in preparing these compounds and to a process for the preparation of these compounds.

The new compounds of the present invention may be regarded as basic substituted alkyl triphenyl ethanol, ethylene and ethane derivatives. They may be rep-resented by the following formulas:

Rs in which R and R are hydrogen, lower alkyl radicals containing from one to four carbon atoms, and R and R together with the nitrogen to which they are attached, may form a heterocycle such as piperidino, morpholino, etc.; n is 2, 3, or 4. The remaining R and R groups may be hydrogen, halogen, lower alkyl, lower alkoxy and trifluoromethyl. The acid addition salts and the qua-ternary ammonium salts may also be prepared as illustrated in the examples and are included in the scope of the present invention.

The new ethanols can be prepared by reacting a substituted benzylmagnesium chloride or bromide with a benzop'henone substituted with a R R N(CH group as follows:

R3 Dehydration of these ethanolswithan acid such as hyof alcoholic hydrogen chloride.

' hydroxide.

drochloric gives the ethylenes while catalytic hydrogenation of the cthylenes gives the ethanes. The benzophenones used as intermediates are also new compounds and processes of preparing them are included in the specific examples.

The new ethanol, ethylene and ethane derivatives of the present invention block the synthesis of cholesterol in the animal system and because of this physiological property, they are useful in the control of hypcrchclesterolemia. They are active orally and may be administered in any conventional dosage form, capsule, tablet, suspension or the like in amounts ranging from 10 mg. to 1 gram per day.

EXAMPLE 1 A mixture of 150 g. (0.75 mole) of (3-bromopropyl)benzene and 2 g. of finely divided iron powder was cooled in an ice bath and stirred while g. (0.75 mole) of bromine was added. After the addition or bromine was complete the mixture was allowed to warm to room temperature and stirred for 2 hours. The organic material was separated, washed with water and dried over anhydrous magnesium sulfate. The material was fractionally distilled under vacuum to give 3-(bromopl1enyl)- propyl bromide (predominantly the para isomer), boiling at 123126 C. at 3 mm. pressure.

The 3-(p-bromophenyl)propyl bromide, 488 g. (1.75 mole), was heated under reflux with 293 g. (4.0 moles) of diethylamine for 23 hours. Ether was added to the cooled reaction mixture and the diethylamine hydrobromide was removed by filtration. The ether and excess diethylamine were removed by distillation and the residue was converted to the hydrochloride salt by the addition The product was recrystallized from butanone to give p-(3-diethylaminopropyDbromo-benzene hydrochloride, melting at .128- C.

p (3 diethylaminopropyl)bromobenzene hydrochloride, 201 g. (0.66 mole), was converted to the free base by the addition of a solution of the calculated amount of sodium hydroxide in water. The free base, p-(3-diethylaminopropyl)bromobenzene, was extracted into ether and the other solution was dried over anhydrous magnesium sulfate. To this ether solution was added an ether solution containing 0.82 mole of n-butyllithium. The resulting mixture was stirred for 15 minutes at room temperature, then an ether solution of 100 g. (0.86 mole) of p-t0lunitrile was added. This mixture was heated under reflux for 1 hour and then was poured into a rnixture of crushed ice and 286 ml. of concentrated hydrochloric acid. The aqueous acid layer was separated and heated on a steam bath for 19 hours. The solution was cooled, made basic by the addition of sodium The basic solution was extracted with ether and the ether solution was dried. After removal of the ether, the residue was fractional ly distilled to give p-(3- diethylaminopropyl)-p'-methylbenzophenone, boiling at 201 C. at 0.15 mm.

p-Chlorobenzylmagnesium chloride, prepared from 16.1 g. (0.1 mole) of p-chlorobenzylchloride and 4.8 g. (0.2 g. at.) of magnesium in ether, was added to an ether solution of 15.4 g. (0.05 mole) of p-(3 diethylaminop-ropyl)-p'-methylbenzophenone.

The mixture was stirred at room temperature for 3 hours and the complex was decomposed with a solution of ammonium chloride. The ether extracts were dried over magnesium sulfate and the residue that remained after removal of solvent was converted to the citrate'salt by adding a solution of 9.6 g. (0.05 mole) of citric acid in butanone. The citrate salt, melting at 70-74 C., was converted to the free base, which was recrystallized from petroleum ether to give l-[p-3-diethylaminopropyl)- phenyl]-l-(p-tolyl) 2 (p-ohlorophenyDethanol, melting at 100-102 C.

EXAMPLE 2 1-[p-(3-Diethylamirzopr0pyl)Phenyl]-1-(p-T0lyl)-2- Phenyleth'anol When the p-chlorobenzylmagnesium chloride was replaced with benzylmagnesium chloride in the procedure of Example 1, the dihydrogen citrate salt of 1-[p-(3-diethylaminopropyDphenyl] 1 (p-tolyl)2phenylethanol (from butanone) was obtained, melting at 8284 C.

EXAMPLE 3 ]-[p- (3-Diethylaminopropyl)Phenyl] -1-(p-Tolyl) -2- (pMethxyp/zenyl)Ethanol When the p-chlorobenzylmagnesium chloride was replaced with p-methoxybenzylmagnesium chloride in the procedure of Example 1, the dihydrogen citrate salt of 1 [p (S-diethylaminopropyl)phenyl]-1-(p-tolyl)-2-(pmethoxyphenyhethanol (from butanone) was obtained, melting at 7880 C.

EXAMPLE 4 1- [p- (3-Dfetlzylaminopropyl)Phenyl] -1-Pl1enyl-2- (p-Mezizoxyplzenyl)Ethanol When benzonitrile is used instead of p-tolunitrile as in Example 1, the benzophenone obtained is p-(3-diethylaminopropyDbenzophenone, boiling at 208 C. at 0.4 mm. When p-chlorobenzylmagnesium chloride was replaced with p-methoxybenzylmagnesium chloride and p-(3-diethylaminopropyl)-p'-methylbenzophenone was replaced with p(3-diethylaminopropy1)benzophenone in the procedure of Example 1, the dihydrogen citrate salt of 1 [p (3 diethylaminopropyl)phenyl]-1-phenyl-2-(pmethoxyphenyl)ethanol (from butanone) was obtained, melting at 8586 C.

EXAMPLE 5 1- [p-(3-Diet/zylaminopropyl)Phenyl] -1-Phenyl-2- p-F luorophenyl E thanol When p-chlorobenzylmagnesium chloride was replaced with p-fiuorobenzylmagnesium chloride and p-(3-diethylaminopropyl)-p-methylbenzophenone was replaced with p-(3-diethylaminopropyl)-benzophenone in the procedure of Example 1, the dihydrogen citrate salt of 1-[p-(3-diethylaminopropyl)phenyl] 1-phenyl-2-(p-fiuorophenyl) ethanol (from butanone-ether) was obtained, melting at 7779 C.

EXAMPLE 6 1- [p- (3-Diethylaminopropyl)Phenyl] -1-(p-T0lyl)-2- Phenylethylene 1 [p (3-diethylaminopropyl)phenyl]-1-(p-tolyl)-2- phenyleth-anol, 4.02 g. (0.01 mole), was refluxed for 4 hours with an excess of alcoholic hydrogen chloride. The alcohol was removed by distillation and the residue was triturated with ether. The crude solid was recrystallized from methylene chloride-ether to give the hydrochloride salt of 1-[p-(B-diethylaminorpopyl)phenyl]-1-(p-toly1)- 2-phenylethylene, melting at 97-100 C.

EXAMPLE 7 1-[p-(3-Diethylaminopr0pyl)Plzenyl] -J-(p-T0lyl) -2 (p-Chloroplzenyl)Ethylene When 1-[p -(3-dicthylaminopropyl)phenyl]-1-(p-tolyl) 2-phenylethanol is replaced with 1-[p-(3-diethylaminopropyl)phenyl] -1-(p-tolyl) -2- (p-chl-orophenyl) ethanol in the procedure of Example 6, the hydrochloride salt of l-[p- (3 diethylaminopropyl)phenyl]-1-(p-tolyD-Z-(p-chlorophenyl)ethylene (from butanone-ether) was obtained, melting at 160-183 C.

4 EXAMPLE 8 1-[p-(3-Diethylaminopropyl)Phenyl] 1-Phenyl-2- (p-Alethoxyphenyl)Ethylene 1-[p-(3-Diethylaminopropyl) Phenylj-l-(p-Tolyl) -2- Phenylethane A mixture of 1.3 g. (0.003 mole) of 1-[p-(3-diethylaminopropyl phenyl] l -p-tolyl -2-phenylethylene hydrochloride and 1 g. of 10% palladium on charcoal in ethanol was hydrogenated at 2 atmospheres of hydrogen until the uptake of hydrogen ceased. The catalyst was removed by filtration and other was added. The solid obtained was recrystallized from butanone to give the hydrochloride salt of 1-[p-(3-diethylaminopropyl)phenyl] 1-(p-tolyl)-2-phenylethane, melting at 142-144" C.

EXAMPLE l0 1- [p- (3-Diethylaminopropyl) P/zenyl] -I-(p-T0lyl) -2- (p-Chlorophenyl)Ethane When 1- [p-,( 3-diethylaminopropyl) phenyl] -1-( p-tolyl) Z-phenylethyIene hydrochloride is replaced wtih l-[p-(3- diethylaminopropyl)phenyl] l (p-tolyl)-2-(p-chloro phenyl)ethylene hydroclhoride in the procedure of Example 9, the hydrochloride salt of 1-[p-(3-diethylarnin0- propyl)phenyl] 1 (p-tolyl)-2-(p-chlorophenyl)ethane (from butanone-ether) was obtained, melting at 127- 129 C.

EXAMPLE l1 I-[p- (3-Diethylamin0propyl)Plzenyl] -1-(p-T0lyl) -2- (m-Trifluoromethylplzenyl)Ethanol When p-chlorobenzylmagnesiurn chloride was replaced with m-trifiuoromethylbenzylmagnesium chloride in the procedure of Example 1, l-[p-(3-diethylaminopropyl) phenyl] l-(p-tolyl)-2-(rn-trifiuoromethylphenyl)ethanol was obtained.

EXAMPLE 12 I-[p-(Z-Dietlzylaminoetlzyl)Phenyl] -I-(p-T0lyl) -2- (p-Chloroplzeizyl) Ethanol When p-(3-diethylarninopropyl) p methylbenzophenone was replaced with p-(2-diethylaminoethyl)-pmethylbenzophenone in the procedure of Example 1, the dihydrogen citrate salt of 1-[p-(Z-diethylaminoethyl)- phenyl] 1 (p tolyl) 2 (p chlorophenyl)ethanol (from butanone) was obtained, melting at 92-94" C.

EXAMPLE l3 1-[p-(Z-Diethylmninoethyl) Phenyl] -I-(p-T0lyl) -2- (p-Chlorophenyl) ethylene When 1 [p (3 diethylaminopropyl)phenyl] 1 (ptolyl)-2-phenylethanol was replaced with l-[p-(Z-diethylaminoethyl)phenyl] l 1 (p tolyl) 2-(p-chloropheny1)- ethanol in the procedure of Example 6, the hydrochloride salt of 1- [p- Z-diethylarninoethyl phenyl] l (p-tolyl) -2- (p-chl0rophenyl)ethylene (from methylene chlorideether) was obtained, melting at -169 C.

EXAMPLE 1 4 1-[p-(2-Dietlzylamin0ethyl)Phenyl] -1-(pT0lyl)-2- (p-Chlorophenyl Ethane When 1 [p {3 diethylaminopropyhphenyl] 1 (ptolyl)-2-phenylethylene hydrochloride was replaced with 1 [p (2 diethylaminoethyl)phenyl] 1 (p tolyl)-2- (p-chlorophenyhethylene hydrochloride in the procedure of Example 9, the hydrochloric salt of l-[p-(Z-diethylaminoethyl)phenyl] 1 (p tolyl) 2-(p-chlorophenyl)- ethane (from butanone-ether) was obtained, melting at 141143 C.

EXAMPLE 15 1-[p-(3-Piperidinopr0pyl)Phenyl] -1-(p-T0lyl) -2- (p-Chlorophenyl) Ethanol Using the procedure of Example 1, 3-(p-bromophenyl)- propyl bromide is heated with piperidine to give p-(3- piperidinopropyl)bromobenzene, from which p-(3-piperidinopronyl)-p-methylbenzophenone is prepared. When p-(3-diethylaminopropyl)-p'-1nethylbenzophenone is replaced with p-(3-piperidinopropyl) p methylbenzophenone in the procedure of Example 1, the dihydrogen citrate salt or" 1-[p-(3-piperidinopropyl)phenyl]-1-(ptolyl)-2-(p-chlorophenyl)ethanol is obtained.

EXAMPLE 16 1-[p-(S-Dibutylaminopropyl)Phenyl] -1-(p-T0lyl) 2-(p-Chlorophenyl)Ethanol When diethylamine is replaced with dibutylamine in the procedure of Example 1, p-(3-dibutylaminopropyD- p'-methylbenzophenone is obtained. When p-(3-diethylaminopropyl)-p'-methylbenzophenone was replaced with p-(3-dibutylaaninopropyl)-p-methylbenzophenone in the procedure of Example 1, the dihydrogen citrate salt of 1 [p 3 dibutylaminopropyl)phenyl] 1 (p tolyl)- 2-(p-chlorophenyl) ethanol was obtained.

EXAMPLE 17 When p-tolunitrile is replaced with p-chlorobenzonitrile in the procedure of Example 1, p-(3-diethylaminopropyD- p'-chlorobenzophenone is obtained. When p-(3-diethylaminopropyl)p'-rnethylbenzophenone was replaced with p-(3-diethylaminopropyl)-p'-chlorobenzophenone in the procedure of Example 1, the dihydrogen citrate salt of 1 [P (3 diethylaminopropyl)phenyl] 1,2 bis(pchlorophenyl)ethanol was obtained.

EXAMPLE 18 1-[p-(3-Diethylamin0pr0pyl)Phenyl] -1(p-T0lyl)- 2-(p-Chlorophenyl)Ethanol Ethobromide To a solution of 7.1 g. (0.016 mole) of 1-[p-(3-di- EXAMPLE 19 1-[p-(3-M0rph0lin0propyl)Phenyl] -1-(p-T0lyl) -2- (p-Chlorophenyl)Ethanol When 3-(p-brornophenyl)propyl bromide is heated with morpholine, p-(3-morpholinopropyl)bromobenzene is obtained, from which p-(3-morpholinopropyl)-p'-methylbenzophenone is prepared, using the procedure of Example 1. When p-(3-mcrpholinopropyl) p'-rnethylbenzophenone replaces. p-(S-diethylaminopropyl)-p'-methylbenzo phenone in the procedure of Example 1, l-[p-(S-morpholinopropyDphenyl]-1-(p-tolyl)-2 (p chlorophenyl)- ethanol is obtained as the dihydrogen citrate salt.

We claim:

1. Compounds of the group consisting of those having the formulas:

in Which R and R are hydrogen, lower alkyl radicals containing from one to four carbon atoms, and R and R together with the nitrogen to which they are attached form a heterocyclic radical of the group consisting of piperidino and morpholino, n is a small whole number from two to tour inclusive, and R and R represent radicals of the group consisting of hydrogen, chloro, fluoro, lower alkyl, lower alkoxy and trifiuoromethyl.

2. 1 [p (3 diethylaminopropyl)phenyl] 1 (ptolyl) -2 (p-chlorophenyl) ethanol.

3. 1 [p (3 diethylaminopropyl)phenyl] 1 phenyl- 2- p-fiuorophenyl) ethanol.

4. 1 [p (2 diethylaminoethyl)phenyl] 1 (ptolyl) -2- (p-chlorophenyl) ethanol.

5. 1 [p (2 diethylaminoethyl)phenyl] 1 (ptolyl) -2-p-chlorophenyl) ethylene.

6. 1 [p (2 diethylaminoethyl)phenyl]- l (p-tolyl)- 2- (p-chlorophenyl) ethane.

OTHER REFERENCES Beilstein: Organische Chemie, vol. 12, 1st supp., page 560, and vol. 13, page 762. 

1. COMPOUNDS OF THE GROUP CONSISTING OF THOSE HAVING THE FORMULAS: 